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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Biometrics. 2012 Sep;68(3):983–989. doi: 10.1111/j.1541-0420.2011.01723.x

Table 3.

Empirical powers for S1(t) = 1 − exp(−t) and S2(t) = 1 − exp(−t + t*), where t* is the median difference; significance level = 0.05

Mean censoring proportions

ni t* 0.43,0.43 0.28,0.28 0.1,0.1 0.01,0.01 0.1,0.28 0.1,0.43
50 0.1 0.051 0.076 0.077 0.080 0.078 0.062
0.2 0.123 0.126 0.167 0.169 0.168 0.158
0.3 0.248 0.291 0.313 0.323 0.312 0.260
0.4 0.383 0.448 0.474 0.481 0.450 0.434
0.5 0.571 0.636 0.669 0.676 0.653 0.608
100 0.1 0.091 0.089 0.117 0.134 0.101 0.086
0.2 0.243 0.281 0.284 0.305 0.266 0.258
0.3 0.468 0.522 0.532 0.565 0.558 0.517
0.4 0.717 0.753 0.811 0.812 0.788 0.775
0.5 0.892 0.913 0.927 0.937 0.919 0.916
200 0.1 0.122 0.141 0.169 0.185 0.168 0.128
0.2 0.478 0.494 0.496 0.501 0.491 0.486
0.3 0.835 0.848 0.847 0.855 0.838 0.831
0.4 0.953 0.976 0.977 0.978 0.975 0.970
0.5 0.997 0.998 0.998 0.999 0.998 0.998